Dataset Information

Blooming of a microbial community in an Ediacaran extreme volcanic lake system.

ABSTRACT: Ancient aquatic sediments are critical archives for studying early microbial life and the types of environments in which they thrived. The recently characterized Amane Tazgart microbialites in the Anti-Atlas, Morocco, are a rare and well-preserved non-marine deposit that evolved in an alkaline volcanic lake setting during the Ediacaran Period. A multiproxy geochemical toolbox reveals evidence pointing to spatio-temporal ecosystem organization and succession related to changing lake water chemistry. This is marked by secular transition from a cold/dry climate, hypersaline alkaline thermophilic and anoxic-oxic community, to a stable state warm/wet climate fully oxygenated fresh to brackish water ecosystem, predominated by oxygenic stromatolites. Extreme dissolved Arsenic concentrations suggest that these polyextremophiles required robust detoxification mechanisms to circumvent arsenic toxicity and phosphate deficiency. We propose that self-sustaining and versatile anoxic to oxic microbial ecosystems thrived in aquatic continental settings during the Ediacaran Period, when complex life co-evolved with a rise in atmospheric oxygen content.

SUBMITTER: Chraiki I

PROVIDER: S-EPMC10241817 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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Blooming of a microbial community in an Ediacaran extreme volcanic lake system.

Chraiki Ibtissam I Chi Fru Ernest E Somogyi Andrea A Bouougri El Hafid EH Bankole Olabode O Ghnahalla Mohamed M El Albani Abderrazak A

Scientific reports 20230605 1

Ancient aquatic sediments are critical archives for studying early microbial life and the types of environments in which they thrived. The recently characterized Amane Tazgart microbialites in the Anti-Atlas, Morocco, are a rare and well-preserved non-marine deposit that evolved in an alkaline volcanic lake setting during the Ediacaran Period. A multiproxy geochemical toolbox reveals evidence pointing to spatio-temporal ecosystem organization and succession related to changing lake water chemist ...[more]

PMID: 37277544

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Dataset Information

Blooming of a microbial community in an Ediacaran extreme volcanic lake system.

Publications

Blooming of a microbial community in an Ediacaran extreme volcanic lake system.

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